INSTALLATION INSTRUCTIONSFor Long Vent Pressure Switch KitsThis kit is designed to replace the standard pressure switch on the N9MP1100F14A2,N9MP1100J20A2, N9MP2075B12A2, N9MP2100F14A2, N9MP2100J20A2, _9MPD100J14A2and _9MPD100J20A2 with a dual pressure switch for long vent installations.Denotes Brand (T, H or C)Please read these instructions completely before attempting installation.Examine Kit to determine that the following parts are present:If any parts are missing, immediately contact your parts supplier.Kit Model No Use with Furnace Model NoNAHA001 LV01 N9MP1075B12A2(Standard) N9MP1100F14A2N9MP2075B12A2N9MP2100F14A2DescriptionPressure SwitchHose, Blower 10"Hose, Transition 21"Wire Asy.InstructionsNAHAOO2LV01(Standard)DescriptionPressure SwitchHose, Blower 10"Hose, Transition 21"Wire Asy.InstructionsNAHAOO3LV01(Hi-Altitude)DescriptionPressure SwitchHose, Blower 10"Hose, Transition 21"Wire Asy.InstructionsParts ListPart No. Qty,1013518 11009238 11009238 11013814 1441 06 1033 01 1N9MP1100J20A2N9MP2100J20A2_9MPD100J 14A2_9MPD100J20A2Parts ListPart No. Qty,10135185 11009238 11009238 11013814 1441 06 1033 01 1N9MP1075B12A2N9MP1100F14A2N9MP1100J20A2N9MP2075B12A2N9MP2100F14A2N9MP2100J20A2_9MPD100J 14A2_9MPD100J20A2Parts ListPart No. Qty,10135165 11009238 11009238 11013814 1441 06 1033 01 1FIRE, EXPLOSION, CARBON MONOXIDEPOISONING HAZARD.This conversion kit shall be installed by a qualifiedservice technician in accordance with theManufacturer's instructions and all applicablecodes and requirements of the authority havingjurisdiction. The qualified service agencyperforming this work assumes responsibility forthe proper conversion of this furnace with this kit.Failure to follow these instructions exactly canresult in death, personal injury and/or propertydamage.ELECTRIC SHOCK HAZARD/FIRE AND/OREXPLOSION HAZARD.Turn OFF gas supply at manual gas valve beforeturning OFF electric power supply and startinginstallations.Turn OFF electric power supply at disconnectswitch or service panel before startinginstallations.Failure to follow this warning can result in death,personal injury, property damage, and/orequipment damage.Disassembly1. After turning off the electrical power supply to the furnace,remove the burner compartment access door to the fur-Race.2. Remove the two (2) blue wires from the 1/4" terminals onthe pressure switch.3. Remove the 5/16" OD rubber hose from the pressure tapon the plastic transition box that connects to the pressureswitch.4. Remove the two (2) screws that fasten the pressure switchto the front of the blower partition and remove the switchfrom the furnace.441 06 1033 01 (06/2004)